POLYISOBUTYLENE-SUBSTITUTED PHENOL, DERIVATIVES THEREOF, AND LUBRICATING COMPOSITIONS CONTAINING THE POLYISOBUTYLENESUBSTITUTED PHENOL AND ITS DERIVATIVES

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EP 4 481 020 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	14.05.2025 Bulletin 2025/20

(43)	Date of publication A2:
	25.12.2024 Bulletin 2024/52

(21)	Application number: 24193019.7

(22)	Date of filing: 14.06.2017

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International Patent Classification (IPC):

C10M 129/10^(2006.01)
C07C 37/14^(2006.01)
C10M 145/24^(2006.01)
C10M 159/16^(2006.01)

C10M 169/04^(2006.01)
C07C 39/06^(2006.01)
C10M 149/12^(2006.01)
C10M 133/14^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	C07C 37/14; C07C 39/06; C10M 145/24; C10M 149/12; C10M 159/16; C10M 169/04; C10M 129/10; C10M 133/14; C10M 2207/024; C10M 2207/026; C10M 2207/027; C10M 2209/101; C10M 2215/062; C10M 2217/043; C10N 2030/64

	C-Sets:
	C07C 37/14, C07C 39/06; C10M 2207/027, C10N 2010/04;

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

17.06.2016 US 201662351483 P
09.06.2017 US 201762517281 P

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	17733273.1 / 3472274

(71)	Applicant: The Lubrizol Corporation
	Wickliffe, OH 44092-2298 (US)

(72)	Inventors:
	SAMPLER, Edward P. Belper, DE56 1QN (GB) WALKER, Gary M. Belper, DE56 1QN (GB) COOK, Stephen J. Belper, DE56 1QN (GB) KILSBY, Samuel M. Belper, DE56 1QN (GB)

(74)	Representative: D Young & Co LLP
	3 Noble Street London EC2V 7BQ London EC2V 7BQ (GB)

(54)	POLYISOBUTYLENE-SUBSTITUTED PHENOL, DERIVATIVES THEREOF, AND LUBRICATING COMPOSITIONS CONTAINING THE POLYISOBUTYLENESUBSTITUTED PHENOL AND ITS DERIVATIVES

(57) A polyisobutylene-substituted hydroxyaromatic compound and derivatives thereof which are suitable for use as additives in lubricating compositions. The polyisobutylene-substituted hydroxyaromatic compound may include the reaction product of a hydroxyaromatic compound with a polyisobutylene having a number average molecular weight of 150 to 800.

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